234243389 has 2 divisors, whose sum is σ = 234243390. Its totient is φ = 234243388.

The previous prime is 234243379. The next prime is 234243397. The reversal of 234243389 is 983342432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 233325625 + 917764 = 15275^2 + 958^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-234243389 is a prime.

It is equal to p_12862694 and since 234243389 and 12862694 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (234243329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117121694 + 117121695.

It is an arithmetic number, because the mean of its divisors is an integer number (117121695).

Almost surely, 2^234243389 is an apocalyptic number.

It is an amenable number.

234243389 is a deficient number, since it is larger than the sum of its proper divisors (1).

234243389 is an equidigital number, since it uses as much as digits as its factorization.

234243389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 38.

The square root of 234243389 is about 15305.0118915341. The cubic root of 234243389 is about 616.4375905253.

The spelling of 234243389 in words is "two hundred thirty-four million, two hundred forty-three thousand, three hundred eighty-nine".